Grace is in town apparently doing "research" for a novel set in small-town America. That's all she'll tell anyone, and whatever writing she's done, it's been under a pen name she hasn't openly admitted to.

portrayed by
Emily Blunt

As far as anyone in town knows, Grace had a mundane upbringing in a small Texan town. She doesn't talk about her family or her childhood much. She is evidently a published author, though her first novel was written under a pen name she hasn't told anyone, and she is in town doing research for her second novel.